Improvement in carriage-wheels



JAMES A. JOHNSTON.

Improvement in Carriage-Wheels.

127 I I Patented May 21,1872.

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PATENT OFFICE.

JAMES A. JOHNSTON, on TOPEKA, KANSAS.

iMPROVEMENT IN CARRIAG E-WHE ELS.

Specification forming part of Letters Patent No. 127,064, dated May 21, 1872.

SPECIFICATION.

I, JAMES A. JOHNSTON, of Topeka, in the countyof Shawnee and State of Kansas, have invented certain, Improvements in Carriage- Wheels, of which the following is a specification:

My invention relates to the construction of carriage-wheels by the combination of alternate straight and tapered spokes, (without tenons,) forming an are around and resting on the box of the axle, and kept in position by sections of metal, forming box and hub complete.

In the four figures of the drawing I illustrate the manner'in which my wheel is constructed. Each alternate spoke B, as in Fig. 1, is made straight on all sides, as in the construction of spokes before tenoning. They are then placed in position around the center, touching each other at the inner end, these forming the inside of the arc. Spoke Ois then out to fill the space between B B,.but not coming entirely through or protruding, thus forming their bearing on B B, respectively, making a self-supporting wheel, when combined with sections D E F G of box or hub. Any style of axle may be used; but the box should be formed as in D E. ()n the outer end of box D is a screw, to combine G, the front part of the hub, to D. The box or hub D E is turned up in a lathe, and by means of a tool a thread or screw is cut on the face of E, andalso on F, for the purpose of drawing all the spokes to the center when combined.

I claim The combination of alternate straight and tapered spokes, (without tenons,) forming an are around and resting on the box of the axle, and kept in position by sections of metal, forming box and hub complete, as described.

JAMES A. JOHNSTON.

Witnesses:

' WM. KEsLEY,

J .NV'. GLEMENTs. 

